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A novel zero-IF binary FSK demodulation scheme
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Paper Abstract

Compared with the superheterodyne transceivers, zero-intermediate frequency (IF) transceivers have simpler structure and lower power consumption. Moreover, communication signals can be processed digitally with a sampling rate equaling to the signal bandwidth before transmission or reception. Binary frequency shift keying (2FSK), as a type of binary single-carrier modulation with excellent anti-interference performance, can also be transmitted or received via a zero-IF structure. Therefore, broadband or frequency hopping 2FSK transceivers can be realized easily in baseband. The traditional zero-IF 2FSK signal demodulation-phase demodulation has a simple structure, but its anti-noise performance is poor due to the unused priori information. In this paper, both coherent and non-coherent demodulation schemes are proposed for zero-IF 2FSK. Mathematical derivations and numerical simulation results show the bit error rate (BER) performance of coherent demodulation of zero-IF 2FSK is 3dB better than that of bandpass 2FSK.

Paper Details

Date Published: 3 January 2020
PDF: 7 pages
Proc. SPIE 11373, Eleventh International Conference on Graphics and Image Processing (ICGIP 2019), 1137332 (3 January 2020); doi: 10.1117/12.2558022
Show Author Affiliations
Zengmao Chen, Harbin Engineering Univ. (China)
Gong Cheng, Harbin Engineering Univ. (China)
Zhiguo Sun, Harbin Engineering Univ. (China)
Xiaoyan Ning, Harbin Engineering Univ. (China)
Xiaolin Zhang, Harbin Engineering Univ. (China)
Rongchen Sun, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 11373:
Eleventh International Conference on Graphics and Image Processing (ICGIP 2019)
Zhigeng Pan; Xun Wang, Editor(s)

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